翅片式弯头流动调整器的整流特性  

Rectification Characteristics of Tab-Type Elbow Flow Conditioner

作　　者：邓清华[1,2] 何伟 张亮[3] 彭傲然 赵卓斌 丰镇平 DENG Qinghua;HE Wei;ZHANG Liang;PENG Aoran;ZHAO Zhuobin;FENG Zhenping(Institute of Turbomachinery, Xi’an Jiaotong University, Xi’an 710049, China;Shaanxi Engineering Laboratory of Turbomachinery and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China;Shanghai Nuclear Engineering Research & Design Institute Limited Company, Shanghai 200233, China)

机构地区：[1]西安交通大学叶轮机械研究所,西安710049 [2]西安交通大学陕西省叶轮机械及动力装备工程实验室,西安710049 [3]上海核工程研究设计院有限公司,上海200233

出　　处：《西安交通大学学报》2021年第6期92-101,共10页Journal of Xi'an Jiaotong University

摘　　要：针对翅片式弯头流动调整器,采用数值方法,研究了3种实际来流条件下的整流特性,分析了其整流机理、整流性能、适用范围和压力损失情况。结果表明:弯头翅片通过压差作用形成了对转的诱导涡,将弯头外侧流体导向弯头内侧,从而大幅增强流体间的动量交换,实现了扰乱原始速度分布并形成均匀流动的效果;相对于光滑管,翅片式流动调整器的压力均匀度变化不大,速度均匀度提升了21%~36%,流向角均匀度则随进口条件变化;翅片式流动调整器的流动阻力高于叶片式流动调整器,低于孔板式流动调整器,与管束式流动调整器相当。The rectification characteristics of a tab-type elbow flow conditioner under three incoming flow conditions are investigated by numerical methods,and the flow mechanism,rectification performance,application range and pressure loss characteristics are analyzed.The results show that the elbow tabs form a counter-rotating induced vortex through the influence of pressure difference,and guide the outside fluid to the inside in elbows,thus greatly enhancing the momentum exchange between the fluids,and achieving the effect of disturbing the original velocity distribution and forming a uniform flow.Compared with the smooth tube elbow,the tab-type flow conditioner has little effect on the pressure uniformity,but increases the velocity uniformity by 21%-36%,and the influence on the flow angle uniformity varies with the inlet conditions.The flow resistance of the tab-type flow conditioner is higher than that of the blade-type flow conditioner,lower than that of the orifice-plate flow conditioner,and equivalent to the tube bundle flow conditioner.

关 键 词：弯头 流动调整器 均匀性 旋涡角 压力损失 

分 类 号：TK313[动力工程及工程热物理—热能工程]